Filtrating spike



FIG. 1 is a left front isometric view of a filtrating spike, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

In the drawings, the broken lines are for the purpose of illustrating environment only and form no part of the claimed design. 

CLAIM The ornamental design for a filtrating spike, as shown and described. 